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Finding the Fourth Proportional to 20,248.92, 30,375.54 and 8,563.32

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Solution

The fourth proportional to 20,248.92, 30,375.54 and 8,563.32 is: 12,845.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,248.92 : 30,375.54 = 8,563.32 : x
  2. Step 2: Convert to fraction form
    20,248.92/30,375.54 = 8,563.32/x
  3. Step 3: Cross multiply
    20,248.92x = 30,375.54 × 8,563.32
  4. Step 4: Simplify right side
    20,248.92x = 260,115,469.19
  5. Step 5: Solve for x
    x = 260,115,469.19/20,248.92
  6. Step 6: Final answer
    x = 12,845.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.